1. Classified According
to the Control Mode of Generator Set
① Manual
Generator Set
This type of genset is
the most common type.The genset has automatic voltage and speed adjustment
functions. The operator can start, close, open and stop the unit at the machine
room. This type of genset is usually used as a primary or backup power source.
②
Self-starting/Auto Start Generator Set
The self-starting unit
is based on the manual unit and has a self-starting control system. When the
mains suddenly loses power, the unit has the functions of automatic start,
automatic voltage regulation, automatic frequency modulation, automatic switch
switching and automatic shutdown; when the unit oil pressure is too low, the
oil temperature and the cooling water temperature are too high, it can
automatically make a sound. Light alarm signal; when the unit is overspeed, it
can automatically stop the unit for emergency shutdown. The advantage of the
automation unit is that it greatly increases the dependence on the operator and
shortens the time between the interruption of the mains and the supply of power
to the unit. This type of unit is usually used as a backup power source.
③
Microcomputer Control Automation Generator Set
The generator consists
of a fully-performing diesel engine, synchronous generator, fuel (oil, cooling
water) automatic compensation device and automatic control panel. The automatic
control panel is controlled by programmable automatic controller (plc). In
addition to the functions of the self-starting unit, it can automatically
increase or decrease the unit according to the load size, automatically handle
the fault, automatically record the printer group operation report and fault
conditions. Fully automatic control is realized, and the serial communication
interface (RS232, RS422, or RS485) realizes the central station to perform
real-time remote control, remote signaling and telemetry for the dispersed
units, thereby achieving unattended operation. This type of unit is especially
suitable for emergency power supply.
2. Classified According
to the Use of Generating Sets
① Continuous
Generator
These generators operate
year-round and are usually located in areas far away from the power grid or
near industrial and mining enterprises to meet the needs of construction,
production and domestic electricity. At present, in the area with more developed
economy, because the construction of electric power network is less than the
power demand of users, the commonly used diesel generator set with short
construction cycle is set up to meet the needs of users. This type of generator
has a relatively large capacity, provides continuous power supply for unsteady
loads, has no limit on the duration of continuous operation, and allows one
hour of over-load power supply for a period of 12 hours. The overload capacity
is 10% of the rated output power of diesel generator set. Because of its long
running time and heavy load, the allowable power relative to the limit power of
this unit is set to a lower point.
② Standby
Generator Set
Usually, the power
required by the user is supplied by the mains, and the generator set sets up to
ensure the basic production and life of the user is the standby genset when the
mains is cut off or when the power supply is interrupted for other reasons.
This type of generator set is mainly located in the telecommunications sector,
hospitals, and industrial and mining enterprises, airports, television stations
and other major power generations. This type of genset is kept in standby state
at all times, providing a continuous supply of power to non-constant loads,
with no restrictions on the duration of continuous operation.
③ Emergency
Generator Set
For the use of
electrical equipment that will cause large losses or personal accidents when
the mains supply is suddenly interrupted, emergency generator sets are often
provided to supply power to these equipment, such as fire protection systems
for high-rise buildings, evacuation lighting, elevators, and control systems
for automated production lines. Such important communication systems and
medical equipment that is undergoing important surgery for patients can quickly
start up when the mains supply is suddenly interrupted, and provide stable AC
power to the load in a short time to ensure timely delivery. Load power supply,
this unit requires a high degree of automation.
3. Classified According
to the Appearance of the Generator Set
① The
Basic/Open Type Generator Set
The basic appearance of
the water tank, diesel engine, alternator and control box are installed on the
same common chassis. The basic genset is usually seen most. It may also be a
self-starting unit or a microcomputer-controlled automation genset.
② Silent/Low
Noise Type Generator Set
The essential difference
between the silent type generator and the open type generator is that the
soundproof cover is installed outside the genset, and the silencer is built in,
which reduces the noise of the generator. This type of genset is suitable for
applications requiring low noise, such as schools, hospitals, and advanced
elevator apartments.
③
Vehicle-Mounted Type Generator Set
The vehicle-mounted unit
is to install the entire diesel generator set in the car compartment. Usually,
the cabinet is to be quietly and noise-reduced. It is a standby and emergency
power source designed and manufactured for emergency power supply.
The trailer genset
(power station) is equipped with a toka on the basis of the silent type unit,
which realizes the convenient movement of the unit and is suitable for
short-distance emergency power supply between cities.
⑤ Container
Type Diesel Generator Set
The container type
generator set is installed in the container. It is designed and manufactured
specially for the power supply of field engineering. The power of the genset is
generally above 500KW.
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